Means eor supporting hot aie eings in furnaces oe stoves



` June 30, 1931. G. c. EMRlcH'- 1311998 NEANS FOR SUPPORTING HOT AIR RNGS IN FURNCES QR STOVES Filed sept. 28, 1928 Gttorneu S Patented June 30, 1931 UNITED srArss rArsNr OFFICE GEORGE C. EMRICH, OF CLUMBU'S, OHIO MEANS FOR SUPPORTING HOT AIR RINGS IN FURNACES OR STOVES Application filed September 28, 1928. Serial No. 309,034.

This invention relates more particularly to coal burning furnaces or stoves in which the upper encl of the fire pot is provided with an inwardly projecting hollow ring made in Sections and provided with openings for the flow of heated air over the top of the burning fuel for the purpose of promoting the combustion of the fuel and for the better consumption of the smoke. In such devices it has been common to provide an air duet leading to the ring, said duet having one of its sides formed by the fire pot so that external fresh air admitted to the duet through an opening controlled by an adjustable door is preliminarily heated before its entry into into the ring.

Because in some varieties of stove or furnace such air Supplying rines project considerably into the fire pot they are greatly subjeeted to the disintegrating action of the air,

fire and heat and Sometimes are so far destroyed by such action or by the impact of large lumps of coal dumped into the fire pot as to require renewal. Such rings have heretofore been secured in place by bolts or screws, but the destructive action of fire and so forth renders Such serews and the ring difficult to remove.

The object of the present invention, therefore, is to provideimproved means whereby such rings, or the Sections thereof, can be easily placed and replaced without the use of screws or bolts.

The invention is embodied in the example herein shown and described, the features of novelty being finally claimed.

In the accompanying drawings- Figure 1 is a Vertical section, with some details oniitted, on the line I-I Fig. 2, of a fraction of a Vfurnace containing the invention.

Fig. 2 is a top plan view of the fire pot withv is shown as made of two parts, the lower part resting on the ash pit or charnber 6. lThe top of the ash pit has a forward extension 7 that, in connection with horizontal wall 8 g and Vertical wall 9 and the firepot, forms an air heating` Chamber leading to' the airdisti'ibuting ring 10, 'said ring being coupled to said air heating Chamber' atiitstop as best seen in Fig. 2. The ring 10, as before indicatd, is best. made up of separable Sections 00 coupled by the vinsertion of one into the next. These Sections, as'well as the top of the air heating l Chamber are provided with openings 11 permitting the passage of heated air Vinto the combustion Chamber. i

The upper edge of the upper seetionof the fire pot is provided with a-channel 12 that, at its inner wall is notched as 'at 13, and socketed as at 14 in the bottom of the channel adjacent the notch. In said notch and socket is seated the shank 15 of'aneyelet 15a, said eyelet having its opening elongated andthe shank thereof'having an upward projection 15h., the upperedgeof the last preferably coinciding with the rimforming the inner wall of the channel 12. f o

The inner side of suchvrin'g section near each ofitS ends is formed witha teat'lOa that can be inserted in the appropriate eyelet so that the ring Sections are thereby hung in ge their proper position. The elongation of the openingof the eyelet permits sufiicient move- Inent ofy the ring Sections upon each other at their joined ends in the direction of their length, and the lifting of two of the sections at such ajoint tov allow the'teats of the two nearest such joints to be removed .from their eyelets and conversely by placing' the ends of two Sections together in' disalined relation after the other teats have been inserted the teats ofcontiguous ends can be dropped concurrently into' `their eyelets. -The particular manipulation just described of placing the ring' Sections is only 'necessary in in- Serting the final section. `VVhen the ring is so assembled the Sections are held from aecidental movement downward and from Sufficient movement in a circular' direction to form a gap between any two of the rings. The dome 17 as shown is provided at its lower edge With a tongue 17a, that enters the channel 12, and inner and outer projections or flanges 17b and 17 C respectively that rest on the upper edges of the Walls forlning the channel 12 so as to make a tight tongue and groove oint.

In erecting the furnace the ring is first asselnbled as seen in Fig. 2. The dolne 17 is then applied, the channel being first provided With the usual cement for making a tight joint. The application of the dolne 17 to the fire pot while, of course, aiding in fixing the eyes, does not preclude the removal or replacement of ring sections at any time that may be desirable Without removing the dolne. It Will thus be observed that the airring Sections are hung on eyelets that project froln the joint between the dome, said eyelets not being subject to the accumulation of ash to interfere With the hanging of the airring sections.

The Character 18 designates the feed door for the fire pot; 19 a vessel for containing Water; 20 a shakel' fol` the grate; 21 the lnain door for the ash pit and 22 a draft regulating door on the lnain door of the ash pit.

Holes 23 admit air from the ash pit to the air heating Chamber supplying the rings When the ash pit doors, or either of theln, is open. After the fire is sufiiciently started the supply of heated air to the ring is controlled by an adj ustable door 24.

rIhe forlns of the parts can be changed Without departing from the gist of the invention as claimed.

Vhat I clailn is:

1. In a stove or furnace having a fire pot and a separable dome there'for, a tongue and groove connection between said fire potand dolne, a. plurality ofhanger members each consisting of a shank portion and a portion having a horizontally elongated eye portion, the shank portions of said hanger members secured-in said tongue and groove connection, and said eye portion extended into the'fire pot chamber, and a plurality of removable air supplying ring members for the fire pot provided With pins engaging said elongated eyes. l i

2. In a stove or furnace having a fire pot and a separable dolne therefor, a tongue and groove connection between said fire pot and dolne, a plurality of hanger members each consisting of a. shank portion and a. portion having a horizontally elongated eye portion, the shank portions of said hanger lnelnbers secured in said tongue and groove connection, and said eye portioll extended into the fire pot chalnber, and a plurality of removable air supplying ring members for the fire pot, said ring'members having telescoping ends and provided With pins engaging said elongated eyes.

3. In a stove or furnace having a fire pot and a separable dolne therefor, a tongue and groove connection between said fire pot and dome, a llanger member consisting of a shank portion and an eyelet portion, said shank portion secured in said tongue and groove connection, and said eyelet portion extended into the fire pot Chamber.

GEORGE O. EMRICH. 

